Jan is a moderately popular boys' name in England & Wales, ranking #355 in 2010 with 117 recorded births. This places Jan in the top 6% of ranked UK boys' names for the year. Its actual usage is classified as Moderately Popular. The name reached its all-time peak in 2017 with 238 births ranking #226. Since 1996, the popularity has increased by 457.1%. In 2010, approximately 1 in every 2,959 boys born was named Jan. FALLING Recent data shows the name is currently falling.